使用Mantle与Sickbeard

Question

我试图用Mantle将Sickbeard的响应映射到我的对象，但我不知道如何映射，因为响应是基于键值的，使用TVDB id作为键，如下所示：

"data": {
    "71663": {
        "air_by_date": 0, 
        "cache": {
            "banner": 1, 
            "poster": 1
        }, 
        "language": "en", 
        "network": "FOX", 
        "next_ep_airdate": "2014-09-28", 
        "paused": 0, 
        "quality": "Any", 
        "show_name": "The Simpsons", 
        "status": "Continuing", 
        "tvdbid": 71663, 
        "tvrage_id": 6190, 
        "tvrage_name": "The Simpsons"
    }, 
    "72227": {
        "air_by_date": 0, 
        "cache": {
            "banner": 1, 
            "poster": 1
        }, 
        "language": "en", 
        "network": "CBS", 
        "next_ep_airdate": "", 
        "paused": 0, 
        "quality": "Any", 
        "show_name": "Two and a Half Men", 
        "status": "Continuing", 
        "tvdbid": 72227, 
        "tvrage_id": 6454, 
        "tvrage_name": "Two and a Half Men"
    }
}

由于data对象不只是包含像这个[{"key": value},{"key": value}]这样的对象数组，而是由一些惟一的id键控制的对象，所以我不确定应该如何将它映射到我的SBShow类中，定义如下：

#import <Foundation/Foundation.h>
#import <Mantle.h>

@interface SBShow : MTLModel <MTLJSONSerializing>

@property (nonatomic, strong) NSNumber *tvdbid;
@property (nonatomic, strong) NSString *showName;
@property (nonatomic, strong) NSString *network;
@property (nonatomic, strong) NSString *status;

@end

@implementation SBShow

+ (NSDictionary *)JSONKeyPathsByPropertyKey {
    return @{@"showName": @"show_name"};
}

+ (NSValueTransformer *)dateJSONTransformer {

    NSDateFormatter *formatter = [[NSDateFormatter alloc] init];
    [formatter setDateFormat:@"yyyy-MM-dd"];

    return [MTLValueTransformer reversibleTransformerWithForwardBlock:^(NSString *str) {
        return [formatter dateFromString:str];
    } reverseBlock:^(NSDate *date) {
        return [formatter stringFromDate:date];
    }];
}

@end

任何帮助都将不胜感激。

Answer 1

您可以这样做，方法是将键添加到“JSON字典”的其余部分：

NSMutableArray *shows = [NSMutableArray array];
// data is an NSDictionary, representing the 'data' key in the JSON
[data enumerateKeysAndObjectsUsingBlock:^(NSString *tvdbID, NSDictionary *showData, BOOL *stop) {
    NSMutableDictionary *modelDictionary = [showData mutableCopy];
    modelDictionary[@"tvdbid"] = tvdbID;
    NSError *error = nil;
    SBShow *show = [MTLJSONAdapter modelOfClass:SBShow.class 
                             fromJSONDictionary:modelDictionary 
                                          error:&error];
    [shows addObject:show];
}];

NSLog(@"Show models are %@", shows);

您可以编写自己的转换器来封装此逻辑，并在适当情况下将其应用于数据键。